diff --git a/pkgs/development/python-modules/frozendict/default.nix b/pkgs/development/python-modules/frozendict/default.nix
index ccc637a32fb7..e1ab3d9da89b 100644
--- a/pkgs/development/python-modules/frozendict/default.nix
+++ b/pkgs/development/python-modules/frozendict/default.nix
@@ -8,7 +8,7 @@
 
 buildPythonPackage rec {
   pname = "frozendict";
-  version = "2.1.0";  # 2.0.6 breaks canonicaljson
+  version = "2.1.0";
   format = "setuptools";
 
   disabled = !isPy3k;